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Id
5231379
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0
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0
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2011-03-08T10:46:07.887
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2011-03-08T10:46:07.887
LastEditDate
2017-05-23T12:02:23.357
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-1
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5224564
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2
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3
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0
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text
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There are many possibilities. Here's the first one which came to my mind. In Erlang, every process is part of a group. For each group, a process - named group leader gets all the output from the group-mates. The shell process is part of the group init. So, what you could do is to <a href="http://www.erlang.org/doc/man/erlang.html#group_leader-2" rel="nofollow noreferrer">change the group leader</a> for the shell process by doing: <pre><code>{ok, Log} = file:open("log", [write]), erlang:group_leader(Log, self()). </code></pre> You might want to create a dedicated process acting as group leader who manages the output in a more clever way. For example, it could wrap the file after a while or when the file reaches a certain size. The problem with this approach is that you have to execute these lines any time you start your shell. Doing it by using the -s flag: <blockquote> erl -s shell_log </blockquote> where shell_log is: <pre><code>-module(shell_log). -export([start/0]). start() -> {ok, Log} = file:open("log", [write]), erlang:group_leader(Log, self()). </code></pre> won't work, because it's still too early (init is still in <code>{starting, started}</code>, as reported by <code>init:get_status()</code>). In the same way, doing it by using the <code>.erlang</code> file in your HOME directory (whose lines are automatically executed every time you start a shell) will fail for a similar reason (init is still in the <code>{starting, applications_loaded}</code> state). Not sure which is the best way to circumvent this problem. I'll think about it. Finally, this question seems a duplicate of <a href="https://stackoverflow.com/questions/2140604/redirect-output-from-erlang-shell-into-a-file">this thread</a>.
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1. POErlang: How to write my outputs in a text file?
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1. PTAnswer
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1. USCommunity
UserOwnerUserId
1. USRoberto Aloi
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